dri_context.c revision 7e302168798907e6e0b08d96141d97f04958a73e 
1/**************************************************************************
2 *
3 * Copyright 2009, VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27/*
28 * Author: Keith Whitwell <keithw@vmware.com>
29 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
30 */
31
32#include "utils.h"
33
34#include "dri_screen.h"
35#include "dri_drawable.h"
36#include "dri_context.h"
37
38#include "pipe/p_context.h"
39#include "state_tracker/st_context.h"
40
41static void
42dri_pp_query(struct dri_context *ctx)
43{
44   unsigned int i;
45
46   for (i = 0; i < PP_FILTERS; i++) {
47      ctx->pp_enabled[i] = driQueryOptioni(&ctx->optionCache, pp_filters[i].name);
48   }
49}
50
51GLboolean
52dri_create_context(gl_api api, const struct gl_config * visual,
53		   __DRIcontext * cPriv, void *sharedContextPrivate)
54{
55   __DRIscreen *sPriv = cPriv->driScreenPriv;
56   struct dri_screen *screen = dri_screen(sPriv);
57   struct st_api *stapi = screen->st_api;
58   struct dri_context *ctx = NULL;
59   struct st_context_iface *st_share = NULL;
60   struct st_context_attribs attribs;
61
62   memset(&attribs, 0, sizeof(attribs));
63   switch (api) {
64   case API_OPENGLES:
65      attribs.profile = ST_PROFILE_OPENGL_ES1;
66      break;
67   case API_OPENGLES2:
68      attribs.profile = ST_PROFILE_OPENGL_ES2;
69      break;
70   default:
71      attribs.profile = ST_PROFILE_DEFAULT;
72      break;
73   }
74
75   if (sharedContextPrivate) {
76      st_share = ((struct dri_context *)sharedContextPrivate)->st;
77   }
78
79   ctx = CALLOC_STRUCT(dri_context);
80   if (ctx == NULL)
81      goto fail;
82
83   cPriv->driverPrivate = ctx;
84   ctx->cPriv = cPriv;
85   ctx->sPriv = sPriv;
86   ctx->lock = screen->drmLock;
87
88   driParseConfigFiles(&ctx->optionCache,
89		       &screen->optionCache, sPriv->myNum, "dri");
90
91   dri_fill_st_visual(&attribs.visual, screen, visual);
92   ctx->st = stapi->create_context(stapi, &screen->base, &attribs, st_share);
93   if (ctx->st == NULL)
94      goto fail;
95   ctx->st->st_manager_private = (void *) ctx;
96   ctx->stapi = stapi;
97
98   // Context successfully created. See if post-processing is requested.
99   dri_pp_query(ctx);
100
101   ctx->pp = pp_init(screen->base.screen, ctx->pp_enabled);
102
103   return GL_TRUE;
104
105 fail:
106   if (ctx && ctx->st)
107      ctx->st->destroy(ctx->st);
108
109   FREE(ctx);
110   return GL_FALSE;
111}
112
113void
114dri_destroy_context(__DRIcontext * cPriv)
115{
116   struct dri_context *ctx = dri_context(cPriv);
117
118   /* note: we are freeing values and nothing more because
119    * driParseConfigFiles allocated values only - the rest
120    * is owned by screen optionCache.
121    */
122   FREE(ctx->optionCache.values);
123
124   /* No particular reason to wait for command completion before
125    * destroying a context, but it is probably worthwhile flushing it
126    * to avoid having to add code elsewhere to cope with flushing a
127    * partially destroyed context.
128    */
129   ctx->st->flush(ctx->st, 0, NULL);
130   ctx->st->destroy(ctx->st);
131
132   if (ctx->pp) pp_free(ctx->pp);
133
134   FREE(ctx);
135}
136
137GLboolean
138dri_unbind_context(__DRIcontext * cPriv)
139{
140   /* dri_util.c ensures cPriv is not null */
141   struct dri_screen *screen = dri_screen(cPriv->driScreenPriv);
142   struct dri_context *ctx = dri_context(cPriv);
143   struct st_api *stapi = screen->st_api;
144
145   if (--ctx->bind_count == 0) {
146      if (ctx->st == ctx->stapi->get_current(ctx->stapi)) {
147         ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL);
148         stapi->make_current(stapi, NULL, NULL, NULL);
149      }
150   }
151
152   return GL_TRUE;
153}
154
155GLboolean
156dri_make_current(__DRIcontext * cPriv,
157		 __DRIdrawable * driDrawPriv,
158		 __DRIdrawable * driReadPriv)
159{
160   /* dri_util.c ensures cPriv is not null */
161   struct dri_context *ctx = dri_context(cPriv);
162   struct dri_drawable *draw = dri_drawable(driDrawPriv);
163   struct dri_drawable *read = dri_drawable(driReadPriv);
164   struct st_context_iface *old_st = ctx->stapi->get_current(ctx->stapi);
165
166   if (old_st && old_st != ctx->st)
167      old_st->flush(old_st, ST_FLUSH_FRONT, NULL);
168
169   ++ctx->bind_count;
170
171   if (!driDrawPriv && !driReadPriv)
172      return ctx->stapi->make_current(ctx->stapi, ctx->st, NULL, NULL);
173   else if (!driDrawPriv || !driReadPriv)
174      return GL_FALSE;
175
176   if (ctx->dPriv != driDrawPriv) {
177      ctx->dPriv = driDrawPriv;
178      draw->texture_stamp = driDrawPriv->lastStamp - 1;
179   }
180   if (ctx->rPriv != driReadPriv) {
181      ctx->rPriv = driReadPriv;
182      read->texture_stamp = driReadPriv->lastStamp - 1;
183   }
184
185   ctx->stapi->make_current(ctx->stapi, ctx->st, &draw->base, &read->base);
186
187   // This is ok to call here. If they are already init, it's a no-op.
188   if (draw->textures[ST_ATTACHMENT_BACK_LEFT] && draw->textures[ST_ATTACHMENT_DEPTH_STENCIL]
189      && ctx->pp)
190         pp_init_fbos(ctx->pp, draw->textures[ST_ATTACHMENT_BACK_LEFT]->width0,
191            draw->textures[ST_ATTACHMENT_BACK_LEFT]->height0,
192            draw->textures[ST_ATTACHMENT_DEPTH_STENCIL]);
193
194   return GL_TRUE;
195}
196
197struct dri_context *
198dri_get_current(__DRIscreen *sPriv)
199{
200   struct dri_screen *screen = dri_screen(sPriv);
201   struct st_api *stapi = screen->st_api;
202   struct st_context_iface *st;
203
204   st = stapi->get_current(stapi);
205
206   return (struct dri_context *) (st) ? st->st_manager_private : NULL;
207}
208
209/* vim: set sw=3 ts=8 sts=3 expandtab: */
210